Apparatus for rewinding rolls of material



July 21, 1931, H. F. GAYLORD v 1,815,250'

APPARATUS FOR REWINDING ROLLS OF MATERIAL Filed March lO. 1928 2 Sheets-Sheet l Julyl 21, 1931. H. F. GYLORD 1,815,250

APPARATUS FOR REWINDING ROLLS OF MATERIAL Filed March. 10. 1928 2 Sheets-Sheet 2 Patented July 21, 1931 Unir STATES PATENT GFFICE HAR-LOW FAR-WELL GAYLORD, GF CONGRESS PARK, ILLINOIS, ASSIGNOR'TO WESTERN ELECTRIC COLIPANY, INCORPORATED, OF NEW YORK, N. Y., A GGRPORATION F Application filed March 10, 1928.

10 their center, which provides a core or thimble having an opening through which the spindle of the serving head projects during the serving operation. It sometimes happens during the handling of these rolls 15 before they are placed on the machine that the pressboard core or annular member becomes damaged so that they cannot be placed directly on the machine.

An object of this invention is to provide 29 an apparatus for rewinding a sufcient amount of the inner end of the paper upon a new thimble or core so that the roll may be used for the purpose for which it was originally intended.

In accordance with the general features of the invention there is provided an apparatus having a knurled arbor for projecting Within and rotating an annular core or thimble of pressboard inserted in the center of a roll of paper tape and pastedy to the inner end of the roll. The arbor and thimble operate to coil a suiiicient' number of the inner convolutions of the roll tightly around the thimble to effect .a roll of sufli cient firmness to sustain its form on the arbor of an insulating machine. For aiding in this rotation aclamping means is provided for frictionally securing the lateral edges of the roll.

A clear understanding of the invention may be had from the following detailed description of one embodiment thereof as illustrated in the accompanying drawings, wherein Fig. 1 is a plan view of a rewinding appa ratus;

Fig. 2 is a vertical longitudinal view taken substantially through the middle of the apparatus, showing portions in cross-section;

APPARATUS FOR REWINDING ROLLS OF MATERIAL Serial No. 260,751.V

Fig. 3 is a plan view of a roll of paper tape to be rewound;

Fig. 4 is a cross-sectional view of the roll through its center, and

Fig. 5 is a plan view of the roll after it is rewound.

Referring now to the drawings in detail in which like numerals designate like parts throughout the several views, there is disclosed a cylindrical arbor having a knurled outer surface, and consisting of two symmetrical parts ll of semicircular crosssection, each of which is secured at its lower extremity by means of a pivot 12 to a vertical, rotatable shaft 13. A coiled spring Y 14 encircling the arbor 10 functions to normally retain the two parts l1 in a vertical closed position with their inner surfaces in contact. A roll of paper tape 15 is shown placed over the arbor and undergoing rewinding.

A vertically positioned freely rotatable spindle having a cone shaped tip 2l is mounted in bearings 22 housed within a cylindrical journal box 23 which is slidably mounted within the hollow lower end of a cylindrical piston member 24 and held therein by a plate 25 secured to the bottom of the piston. The cone shaped tip is adapted to t a correspondingly shaped aperture l@ Within the center of the arbor 10, and to force the two parts 1l of the arbor apart when it is forced within this aperture. A spring 26 secured within the piston member resiliently presses the journal box 23 against the plate 25 and permits, the journal box 23 and consequently the spindle 2O to be adjusted vertically in a resilient manner when the tip end 21 thereof is Jforced within the aperture 16 and against the two halves ll of the arbor 10 which is held together by the spring 14.

A roll retaining member 37 resiliently secured to the lower end of the piston member 24 by means of three bolts 30 and a coiled spring 31 serves to frictionally constrain the outer portions of the roll of paper tape 15 and to keep the lateral edges of the roll even while the arbor 10 is being rotated therewithin. The bolts are slidable within lugs 38 integral with the piston member 24 and the motor 51.

are rigidly secured to the roll retaining member 37. rlhe shaft 13 which supports the arbor 10 is rotatably secured in a bearing 32 journaled within a housing which is mounted on a base 34 sustained by a support 36.

An arm secured to the base 34 provides a sleeve 42 and one member 43 of a hinge. The sleeve 42 acts as a guide for the cylindrical piston 24, and a hand leve'1 44, hinged to the member 43, and connected to the cylindrical piston 24 by means of a pin 45, slidable within a slot 46, serves to raise and lower the piston within the sleeve. The hand lever is here shown in the lower position, as itwould be held by an operator for rewinding the roll of paper tape 15; normally the hand lever is held in an upper position by a compression spring 50.

A. motor 51 connected to a belt 52 guided by an idler or belt tightening pulley 53 serves to drive the shaft 13 through a pulley 54 connected thereto. rlhe motor is controlled by a push button switch 55 and cooperating pin G0 connected to the hand lever 44, the pin GO closing the switch to cause trie motor to run while the hand lever 44 is in the lower position.

The operation of the device will now be described. The roll of tape 15 to be rewound, referring to Figs. 3 and 4, is usually damaged or distorted at its center, having damaged central convolutions G1, and a damaged annular pressboard Vcore 62. The roll may also have distortions at points removed from the center, such as in convolutions 63. The damage at the center of the roll prevents the roll from litting the arbor of an insulating machine and the use of the roll in the machine, and it is the purpose of this invention to remedy this difficulty. The first'steps toward accomplishing the purpose is the manual removal of the entire damaged central portion of the roll and the manual insertion of a new annular core or thimble 64 of pressboard withinV the center of the roll 15. The outer surface of the thimble is covered with adhesive material which causes the end portion of the tape to adhere to the thimble. The roll with the inserted thimble therein is placed'on the base 34 of the apparatus, with the inserted thimble 64 encompassing the knurled arbor 10. The operator pulls down the handle 44 to engage the roll retaining member with the top of the roll 15, concurrently forcing the tip 21 of the spindle 20 within the central aperture 1G of the hinged arbor 10, and also actuating the button switch 55 to start Thus, contemporaneously the shaft 13 aud arbor 10 are rotated and the arbor parts l1 are expanded against the compression of the retaining spring 14,

ycausing the arbor parts 11 to grip the inner surface of the thimble 64 to rotate it and the end of the paper tape adhering thereto. The thimble 64 is of course rotated in the proper direction to draw up on the inner convolutions of the roll, and this rotation is continued until the whole inner portion of the roll is tight enough so that the whole roll will retain its form. The rotation may be continued farther than the inner portion and may be carried on until the outer distortions 63 are straightened, especially if these distortions happen to be of suflicient size to interfere with the unwinding of the roll. Furthermore, if the roll happens to be loose throughout the winding operation may be extended to the whole roll to produce a solid unit. The roll retaining member 37 during this rotating operation functions to frictionally engage the top edges of the outer convolutions of the roll to prevent rotation in those portions so that the inner convolutions of the roll will be tightened around the thimble 63, but the outer convolutions will also later be tightened and diminished in diameter, as the slight frictional holding of the member 25 so permits.

To allow the inner convolutions of the roll to rotate while the outer convolutions are being held it is desirable that the roll retaining member 37 be constructed as shown, with its inner portion slightly raised or hollowed out so as not to contact with the roll. This inner portion should not be raised to any great extent however, as such construction would permit the lateral edges of the roll 15 to become uneven. The drawing up of the roll around the thimble G3 is usually carried out only to the eXtent that will effect the firm adherence of the whole roll to the core or thimble, or in other words until the roll will retain its form, and it is usually not necessary to tighten the whole roll as the roll has been previously wound so tight as to allow for a loosening of the outer portion and yet not fall apart. However, if it is desired to take the time to tighten the convolutions of the whole roll or to straighten out distortions in outer convolutions thereof, the construction of the apparatus so permits, and the fmished'roll in diminisheddiameter will appear as is shown in Fig. 5. After the roll has been sufficiently rewound the operator allows the handle 44 to return to the upper position due to the actuationof the compression spring 50. The rewound roll is then removed and another inserted, and the same operation as just described is then carried out.

The above description in connection with the accompanying drawings present one embodiment of an invention for effectively and economically rewinding rolls of material from the central opening. It is, of course, to be understood that the invention is not limited to this one embodiment but is l'EO susceptible of various' modifications Within the scope of the appended claims.

What is claimed is:

l. A n apparatus for rewvinding a roll of material, comprising means for supporting tlie roll, a radially expansible means for engaging and rotating tlie center of the roll, means for clamping the roll to the supporting means, rotatable means for expanding tlie means for rotating the center of the roll, means movable axially of the roll and resiliently supporting the clamping and the expanding means, a guide for the movable means, means for actuating the movable means, means for driving the means for rotating the center of the roll, and controlling means connected With the actuating means for operating the driving means concurrently with the application of the expanding means and the means for clamping the roll.

2. An apparatus for revvinding a roll of material, comprising means for supporting the roll, an expansible arbor for engaging and rotating tlie center of the roll, means for expanding the arbor into engagement with the roll, power driven means for driving the arbor, and common means for actuating tlie arbordriving means and the arbor expanding means.

3. An apparatus for revvinding a roll of material, comprising means for supporting the roll, means for clamping the roll to the supporting means, an arbor for engaginfr and rotating the center of the roll,

b means for driving the arbor, and common eiectlve the roll means for rendering clamping means and the arbor driving means.

4L. An apparatus Jfor rewinding a roll of material, comprising means for supporting the roll, means for clamping the roll to the supporting means, an expansible arbor for engaging and rotating the center of the roll, means Jfor expanding the arbor into engagement with the roll, and common means for simultaneously rendering effective the roll clamping means and the arbor expanding means.

5. An apparatus for rewinding a roll or" material, comprising means for supporting the roll, means for yieldably clamping the roll to the supporting means, an expansible arbor for expanding and engaging tlie center of the roll, means for expanding tlie arbor into engagement With the roll, means for rotating tlie arbor, and common means for simultaneously rendering effective the roll clamping means, the arbor expanding means and the arbor rotating means.

6. An apparatus for revvinding a roll of material, comprising a base plate for supporting the roll and having an aperture, an expansible arbor projecting through the Cil 

